Mercurial > dive4elements > river

annotate gwt-client/src/main/java/org/dive4elements/river/client/server/ExportServiceImpl.java @ 8870:c26fb37899ca

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Introduced groups for modules. Modules marked with the same group-id, will be put together in the ui. Also using now the localization info from the server instead of localizing the modules again on the client side.
author gernotbelger
date Wed, 07 Feb 2018 11:59:13 +0100
parents 5e38e2924c07
children 0a5239a1e46e
rev   line source
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
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2 * Software engineering by Intevation GmbH
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3 *
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4 * This file is Free Software under the GNU AGPL (>=v3)
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the
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6 * documentation coming with Dive4Elements River for details.
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7 */
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8
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9 package org.dive4elements.river.client.server;
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10
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11 import java.io.InputStreamReader;
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12 import java.io.OutputStream;
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13 import java.io.IOException;
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14 import java.io.OutputStreamWriter;
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15
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16 import org.w3c.dom.Document;
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17 import org.w3c.dom.Element;
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18
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19 import org.apache.log4j.Logger;
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20
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21 import javax.servlet.http.HttpServlet;
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22 import javax.servlet.http.HttpServletRequest;
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23 import javax.servlet.http.HttpServletResponse;
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24
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25 import org.dive4elements.artifacts.common.utils.ClientProtocolUtils;
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26 import org.dive4elements.artifacts.common.utils.XMLUtils;
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27
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28 import org.dive4elements.artifacts.httpclient.http.HttpClient;
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29 import org.dive4elements.artifacts.httpclient.http.HttpClientImpl;
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30
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31
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32 /**
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33 * This service is used to request a data export from the artifact server. The
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34 * response is directed directly to the output stream, so that a file dialog is
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35 * opened.
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36 *
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37 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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38 */
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39 public class ExportServiceImpl
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40 extends HttpServlet
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41 {
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42 private static final Logger log =
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43 Logger.getLogger(ExportServiceImpl.class);
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44
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45
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46 public void doGet(HttpServletRequest req, HttpServletResponse resp) {
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47 log.info("ExportServiceImpl.doGet");
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48
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49 try {
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50 final OutputStream out = resp.getOutputStream();
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51
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52 String url = getServletContext().getInitParameter("server-url");
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53 String uuid = req.getParameter("uuid");
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54 String name = req.getParameter("name");
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55 String mode = req.getParameter("mode");
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56 String type = req.getParameter("type");
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57 String locale = req.getParameter("locale");
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58 String km = req.getParameter("km");
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59 String fn = name + "." + type;
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60 final String enc = req.getParameter("encoding");
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61
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62 resp.setHeader("Content-Disposition", "attachment;filename=" + fn);
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63
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64 if (log.isDebugEnabled()) {
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65 log.debug("Request " + type + " export.");
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66 }
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67
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68 Document attr = null;
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69 if (km != null && km.length() > 0) {
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70 attr = XMLUtils.newDocument();
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71 XMLUtils.ElementCreator ec =
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72 new XMLUtils.ElementCreator(attr, null, null);
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73 Element e = ec.create("km");
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74 e.setTextContent(km);
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75 attr.appendChild(e);
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76 }
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77 Document request = ClientProtocolUtils.newOutCollectionDocument(
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78 uuid, mode, type, attr);
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79 HttpClient client = new HttpClientImpl(url, locale);
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80
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81 if (enc != null) {
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82 InputStreamReader in = new InputStreamReader(
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83 client.collectionOut(request, uuid, mode),
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84 "UTF-8");
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85 try {
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86 OutputStreamWriter encOut = new OutputStreamWriter(
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87 out, enc);
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88 char buf [] = new char[4096];
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89 int c;
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90 while ((c = in.read(buf, 0, buf.length)) >= 0) {
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91 encOut.write(buf, 0, c);
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92 }
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93 encOut.flush();
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94 }
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95 finally {
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96 in.close();
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97 }
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98 }
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99 else { // Just copy thru.
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100 client.collectionOut(request, uuid, mode, out);
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101 out.flush();
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102 }
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103 }
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104 catch (IOException ioe) {
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105 log.error(ioe, ioe);
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106 }
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107 }
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108 }
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109 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org